Fireproof and anti-cutting safety belt buffer belt
By setting the polycarbonate over-plastic layer and aluminum-covered heat shrink tube on the outside of the safety belt wire rope, the problem of insufficient protection of traditional safety belts in high temperatures and cutting environments is solved, and higher fire-proof and anti-cutting performance and connection stability are achieved, and the comfort and safety of wearing are improved.
Patent Information
- Application Number
- CN202422235018.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-12
AI Technical Summary
Traditional seat belts have insufficient protective performance when cutting fires or sharp objects, especially in industrial production, which causes the seat belts to melt or break and cannot effectively protect the wearer.
A polycarbonate over-plastic layer is installed on the outside of the wire rope of the safety belt, and an aluminum sleeve and heat shrink tube are added to the connection to form a multi-layer protection, combined with a double safety hook design to improve fire-proof and cutting performance and connection strength.
It significantly improves the fire resistance and cutting resistance of the seat belt, enhances connection stability and wear comfort, reduces the risk of failure in high temperature or cutting environments, and provides comprehensive safety guarantees.
Smart Images
Figure CN223208855U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of safety belt buffer strips, in particular to a fire-proof and cut-proof safety belt buffer strip. Background Art
[0002] As a basic safety equipment in many fields such as industry, construction, and automobiles, the importance of seat belts is self-evident. Traditional seat belts are mainly made of nylon webbing. Although they have certain strength and durability, their protective performance is obviously insufficient when facing fire or cutting by sharp objects. Especially in industrial production, fire accidents are frequent. Once a fire occurs, traditional seat belts are very likely to melt or burn due to high temperatures, thereby losing their protective function and causing serious safety accidents. In addition, in special environments such as rescue and rock climbing, seat belts may be accidentally cut, and traditional materials cannot effectively resist such risks. With the advancement of technology and the improvement of society's safety awareness, the demand for seat belts that can maintain stable performance under extreme conditions is increasing.
[0003] Some products currently on the market attempt to improve the fire and cut resistance of safety belts by adding flame retardants or using high-strength fibers. However, these solutions often come with high costs and complex manufacturing processes. More importantly, these improvements fail to fundamentally address the risk of belt strength loss at high temperatures and breakage when cut. For workers exposed to potentially hazardous environments for extended periods, existing products lack a plastic coating, and the surface of the steel wire rope can easily scratch the skin, making protection ineffective. Therefore, we propose a fire and cut-resistant safety belt buffer strip. Utility Model Content
[0004] In response to the problems existing in the prior art, the purpose of this utility model is to provide a fire-resistant and cut-resistant safety belt buffer belt. By providing a plastic layer, the friction between people or objects and the buffer rope is reduced to prevent damage and also serves as insulation. The plastic layer is a polycarbonate layer that can provide flame retardancy.
[0005] The utility model is implemented as follows: a fire-proof and cut-proof safety belt buffer belt comprises a steel wire rope, the outer side of the steel wire rope is provided with a plastic layer, the left end of the steel wire rope is fixedly connected with a first stainless steel ring, the right end of the steel wire rope is fixedly connected with a second stainless steel ring, the left side of the steel wire rope is covered with two first aluminum sleeves, the first aluminum sleeves are pressed onto the steel wire rope, the right side of the steel wire rope is covered with two second aluminum sleeves, the second aluminum sleeves are pressed onto the steel wire rope, the outer sides of the two first aluminum sleeves are covered with a first heat shrink tube, the outer sides of the two second aluminum sleeves are covered with a second heat shrink tube, and the right side of the second stainless steel sleeve is connected with a double safety hook device.
[0006] Optionally, the steel wire rope portions covered by the first aluminum sheath and the second aluminum sheath are both provided with peeled portions from which the plastic layer is removed.
[0007] Optionally, the plastic layer is a polycarbonate layer, and the thickness of the plastic layer is not less than three millimeters.
[0008] Optionally, the left side of the steel wire rope is set to be ring-shaped, and the left end of the steel wire rope is set inside the first aluminum sleeve.
[0009] Optionally, the right side of the steel wire rope is set to be ring-shaped, and the right end of the steel wire rope is set inside the two second aluminum sleeves.
[0010] Optionally, the double safety hook device includes an upper safety hook and a lower safety hook, and the upper safety hook and the lower safety hook are rotatably connected via a connecting shaft.
[0011] Optionally, the upper safety hook includes an annular ring, the upper left portion of the annular ring is fixedly connected to a fixed hook, and the upper right portion of the annular ring is connected to a movable hook via a rotating shaft.
[0012] Optionally, a spring sheet is sleeved on the rotating shaft, and the upper part of the spring sheet extends into the inner bottom of the movable hook.
[0013] Optionally, both the movable hook and the fixed hook are provided with threads, and the movable hook and the fixed hook are connected via a threaded sleeve.
[0014] Optionally, a through hole for connecting the shaft is provided on the annular ring, and the lower safety hook and the upper safety hook have the same structure.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] 1. The inclusion of a plastic layer reduces friction between people or objects and the buffer rope, preventing wear and tear during use. The plastic layer is made of polycarbonate, which not only offers excellent wear resistance but also enhances the safety belt's fire resistance due to its high flame retardancy. This effectively prevents the belt from burning or melting in high-temperature environments such as fire, protecting the wearer's life. Furthermore, the insulating properties of polycarbonate make the belt safer and more reliable in electrical work environments, significantly enhancing the belt's overall protective capabilities.
[0017] 2. The wire rope is fixedly connected to the first and second stainless steel rings at each end, and is reinforced with first and second aluminum sleeves on the left and right sides. This design not only enhances the mechanical strength of the joint, ensuring that the safety belt will not easily break under high tension, but also further improves the durability and stability of the joint through the dual protection of the aluminum sleeve and heat shrink tubing. Especially in extreme conditions, such as high temperatures or environments with high cutting risks, this design can effectively reduce the risk of safety belt failure, significantly improving the strength and reliability of the safety belt connection.
[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural diagram provided by the utility model;
[0020] Figure 2 This is a schematic diagram of the peeling portion provided by the utility model;
[0021] Figure 3 This is a schematic diagram of the plastic layer provided by the utility model;
[0022] Figure 4 This is a schematic diagram of the double safety hook provided by the utility model;
[0023] Figure 5 This is a schematic diagram of the explosion of the upper safety hook provided by the utility model;
[0024] Figure 6 The utility model provides Figure 5 Enlarged schematic diagram of point A in the middle.
[0025] In the figure: 1. First stainless steel collar; 2. First aluminum sleeve; 3. First heat shrink tube; 4. Steel wire rope; 41. Peeled portion; 42. Plastic layer; 5. Second stainless steel collar; 6. Double safety hook device; 61. Upper safety hook; 611. Annular ring; 612. Movable hook; 613. Fixed hook; 614. Threaded sleeve; 615. Rotating shaft; 616. Spring sheet; 62. Lower safety hook; 63. Connecting shaft; 7. Second aluminum sleeve; 8. Second heat shrink tube. DETAILED DESCRIPTION
[0026] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0027] like Figures 1 to 6 As shown, an embodiment of the present invention provides a fire-resistant and cut-resistant safety belt buffer strip.
[0028] It includes a steel wire rope 4, the outer side of the steel wire rope 4 is provided with a plastic layer 42, the left end of the steel wire rope 4 is fixedly connected to a first stainless steel ring 1, the right end of the steel wire rope 4 is fixedly connected to a second stainless steel ring 5, the left side of the steel wire rope 4 is covered with two first aluminum sleeves 2, the first aluminum sleeves 2 are pressed on the steel wire rope 4, the right side of the steel wire rope 4 is covered with two second aluminum sleeves 7, the second aluminum sleeves 7 are pressed on the steel wire rope 4, the outer sides of the two first aluminum sleeves 2 are covered with a first heat shrink tube 3, the outer sides of the two second aluminum sleeves 7 are covered with a second heat shrink tube 8, and the right side of the second stainless steel ring 5 is connected to a double safety hook device 6.
[0029] The portions of the steel wire rope 4 covered by the first aluminum sheath 2 and the second aluminum sheath 7 are both provided with a peeled portion 41 where the plastic layer 42 has been removed.
[0030] The plastic layer 42 is a polycarbonate layer, and the thickness of the plastic layer 42 is not less than three millimeters.
[0031] The left side of the steel wire rope 4 is arranged in a ring shape, and the left end of the steel wire rope 4 is arranged inside the first aluminum sleeve 2 .
[0032] The right side of the steel wire rope 4 is arranged in a ring shape, and the right end of the steel wire rope 4 is arranged inside the two second aluminum sleeves 7 .
[0033] The double safety hook device 6 includes an upper safety hook 61 and a lower safety hook 62 , and the upper safety hook 61 and the lower safety hook 62 are rotatably connected via a connecting shaft 63 .
[0034] The upper safety hook 61 includes an annular ring 611 , a fixed hook 613 is fixedly connected to the upper left portion of the annular ring 611 , and a movable hook 612 is connected to the upper right portion of the annular ring 611 via a rotating shaft 615 .
[0035] A spring sheet 616 is sleeved on the rotating shaft 615 , and the upper portion of the spring sheet 616 extends into the inner bottom of the movable hook 612 .
[0036] Both the movable hook 612 and the fixed hook 613 are provided with threads, and the movable hook 612 and the fixed hook 613 are connected by a threaded sleeve 614 .
[0037] A through hole for installing the connecting shaft 63 is provided on the annular ring 611 , and the lower safety hook 62 and the upper safety hook 61 have the same structure.
[0038] As the core load-bearing component of the safety belt, the steel wire rope 4 requires crucial strength and durability. Furthermore, the addition of a plastic layer 42 not only enhances the overall structural smoothness and reduces frictional damage from contact with the human body or other objects, but also provides fire and cut resistance. Polycarbonate was chosen as the material for this plastic layer 42 due to its excellent flame retardancy and high mechanical strength, effectively withstanding flames and cuts from sharp objects, ensuring safe use even in extreme conditions.
[0039] Traditional safety belts typically use nylon webbing, which, while offering excellent flexibility and comfort, suffers from significant deficiencies in fire and cut resistance. The present invention significantly improves the safety belt's fire and cut resistance by providing a polycarbonate overmolded layer 42 on the outer surface of the steel cord 4. The polycarbonate layer, which is at least three millimeters thick, not only provides adequate flame retardant protection but also effectively prevents penetration by sharp objects, thus resolving the problem of traditional safety belts' inadequate protection in high-temperature or cutting environments.
[0040] The aluminum sheath is designed primarily to strengthen the connection between the steel wire rope 4 and the ferrule. The first and second aluminum sheaths 2 and 7 are crimped onto the steel wire rope 4. A first and second heat shrink tubing 3 and 8 are respectively applied to the outer surfaces of the aluminum sheaths, further enhancing the tightness and waterproofness of the connection. This multi-layered protection design ensures structural strength while addressing various potential risks in the operating environment.
[0041] The connection of traditional safety belts is often one of their weakest links, prone to loosening or even breaking due to long-term use or improper operation. The present invention creates a dual protection mechanism by providing an aluminum sleeve and heat shrink tubing. The compression of the aluminum sleeve ensures a tight connection between the steel wire rope (4) and the collar, while the heat shrink tubing further strengthens the stability of this connection and acts as a seal, preventing moisture and impurities from entering the connection area and causing corrosion or wear. This not only solves the problem of loose connections in traditional safety belts, but also improves the durability and reliability of the overall structure.
[0042] The dual safety hook device 6 is designed to facilitate rotation of the safety belt during use. It connects the upper safety hook 61 and the lower safety hook 62 via a connecting shaft 63, allowing them to rotate freely within a certain range. This design allows the safety belt to adapt to different working postures, reduces the inconvenience caused by fixed angles, and improves wearing comfort and flexibility.
[0043] Traditional safety belts, with their fixed hooks, can restrict the user's range of motion and cause an unnecessary feeling of restraint. The present invention utilizes a dual-safety hook mechanism 6, allowing the hook to rotate on the connecting shaft 63, allowing the safety belt to flexibly adjust its position based on the user's body movements. This not only improves wearing comfort but also reduces the risk of the belt twisting or becoming stuck due to changes in posture, thereby enhancing the practical user experience and safety of the safety belt.
[0044] A polycarbonate over-molded layer 42 is applied to the outside of the steel rope 4. A peeled section 41 is provided on the portion of the steel rope 4 covered by the first and second aluminum sheaths 2 and 7, where the over-molded layer 42 is removed. Polycarbonate is a high-performance engineering plastic with excellent flame retardancy and cut resistance, making it suitable as a protective layer for seat belts. The peeled section 41 ensures direct contact between the aluminum sheath and the steel rope 4, forming a reliable mechanical connection during the pressing process.
[0045] The ends of the steel wire rope 4 are designed as rings, with the left end positioned inside the first aluminum sheath 2 and the right end positioned inside two second aluminum sheaths 7. This design not only simplifies the manufacturing process but also enhances the mechanical strength of the connection through the compression of the aluminum sheaths. Furthermore, heat shrink tubing further strengthens the sealing of the connection, preventing moisture and impurities from entering and causing corrosion or wear.
[0046] The dual safety hook system 6 comprises an upper safety hook 61 and a lower safety hook 62, which are rotatably connected via a connecting shaft 63. This design allows the safety belt to rotate freely as needed during use, improving wearing comfort and flexibility. The movable hook 612 in the upper safety hook 61 is connected to the fixed hook 613 via a threaded sleeve 614, and a spring leaf 616 is provided to ensure the hook's secure closure.
[0047] In summary, the present invention not only solves the problem of insufficient fire and cut resistance of safety belts in the existing technology through a series of carefully designed structures and technical means, but also makes significant improvements in improving connection strength, safety of use and convenience, thereby providing users with a more comprehensive and reliable safety protection solution.
[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fire-proof and cut-proof safety belt buffer belt, comprising a steel wire rope (4), characterized in that: The outer side of the steel wire rope (4) is provided with a plastic layer (42), the left end of the steel wire rope (4) is fixedly connected to a first stainless steel ring (1), the right end of the steel wire rope (4) is fixedly connected to a second stainless steel ring (5), the left side of the steel wire rope (4) is covered with two first aluminum rings (2), the first aluminum rings (2) are pressed on the steel wire rope (4), the right side of the steel wire rope (4) is covered with two second aluminum rings (7), the second aluminum rings (7) are pressed on the steel wire rope (4), the outer sides of the two first aluminum rings (2) are covered with a first heat shrink tube (3), the outer sides of the two second aluminum rings (7) are covered with a second heat shrink tube (8), and the right side of the second stainless steel ring (5) is connected to a double safety hook device (6).
2. The fire-resistant and cut-resistant safety belt buffer strip according to claim 1, characterized in that: The portions of the steel wire rope (4) covered by the first aluminum sleeve (2) and the second aluminum sleeve (7) are both provided with a peeled portion (41) from which the plastic layer (42) is removed.
3. The fireproof and cutproof safety belt buffer strip according to claim 1, characterized in that: The plastic layer (42) is a polycarbonate layer, and the thickness of the plastic layer (42) is not less than three millimeters.
4. The fire-resistant and cut-resistant safety belt buffer strip according to claim 1, characterized in that: The left side of the steel wire rope (4) is arranged in a ring shape, and the left end of the steel wire rope (4) is arranged inside the first aluminum sleeve (2).
5. The fire-resistant and cut-resistant safety belt buffer strip according to claim 1, characterized in that: The right side of the steel wire rope (4) is arranged in a ring shape, and the right end of the steel wire rope (4) is arranged inside the two second aluminum sleeves (7).
6. The fireproof and cutproof safety belt buffer strip according to claim 1, characterized in that: The double safety hook device (6) comprises an upper safety hook (61) and a lower safety hook (62), and the upper safety hook (61) and the lower safety hook (62) are rotatably connected via a connecting shaft (63).
7. The fire-resistant and cut-resistant safety belt buffer strip according to claim 6, characterized in that: The upper safety hook (61) comprises an annular ring (611), the upper left portion of the annular ring (611) is fixedly connected to a fixed hook (613), and the upper right portion of the annular ring (611) is connected to a movable hook (612) via a rotating shaft (615).
8. The fireproof and cut-resistant safety belt buffer strip according to claim 7, characterized in that: A spring sheet (616) is sleeved on the rotating shaft (615), and the upper portion of the spring sheet (616) extends into the inner bottom portion of the movable hook (612).
9. The fireproof and cut-resistant safety belt buffer strip according to claim 8, characterized in that: The movable hook (612) and the fixed hook (613) are both provided with threads, and the movable hook (612) and the fixed hook (613) are connected via a threaded sleeve (614).
10. The fireproof and cutproof safety belt buffer strip according to claim 9, characterized in that: The annular ring (611) is provided with a through hole for installing the connecting shaft (63), and the lower safety hook (62) and the upper safety hook (61) have the same structure.